baber/WOPTO huggingface dataset:
Patent GB-910511-A (GB)
Title: Improvements in or relating to photographic or other materials
IPC: C07D295/027
Filed: 1959-02-19
Abstract: Lead N-benzyl-dithiocarbamate is prepared by adding carbon disulphide to a solution of benzylamine in methanol, and then stirring in an aqueous solution of lead acetate.  Instead of benzylamine, the amine may be o -phenyln-pentylamine, 3-methoxypropylamine-1, b -phenylethylamine, di-n-butylamine or piperidine, giving respectively lead dithiocarbamates wherein the N atom has a o -phenyl-n-pentyl, 3-methoxypropyl, b -phenylethyl or di-n-butyl substituent or forms part of a piperidine ring. Similarly, by using a solution of mercuric chloride in methanol or aqueous stannous chloride instead of aqueous lead acetate, mercury or tin N-benzyl-dithiocarbamates are formed. Lead N-(carbethoxymethyl)-dithiocarbamate is prepared by adding p aqueous sodium hydroxide to a solution of glycine ethyl ester hydrochloride in aqueous methanol, adding CS2, filtering off the common salt formed, and then adding aqueous lead acetate. Lead N-(carboxymethyl)-dithiocarbamate is formed by dissolving glycine ethyl ester hydrochloride in water, adding aqueous KOH and shaking with carbon disulphide, filtering and treating the potassium salt with aqueous lead acetate.  Lead N-benzhydryl-dithiocarbamate is prepared by adding CS2 to benzhydrylamino in concentrated methanolic ammonia and ether, filtering off the ammonium salt formed, dissolving it in methanol and adding aqueous lead acetate.  Lead N-(b -naphthyl-methyl)-di-thiocarbamate is similarly prepared.  Lead 1,4-diamino-butane bis-dithiocarbamate is prepared by adding CS2 to 1,4-diaminobutane in methanol and pouring into aqueous lead acetate. 1,6-Diaminohexane carbamate is prepared by passing carbon dioxide through 1,6-diaminohexane in methanol.  In Example 6 the reaction is carried out in carbon tetrachloride containing ethyl cellulose, and results in a finely divided suspension of the carbamate.
Patent GB-1159903-A (GB)
Title: Multiple Garage with Two Standings Arranged One Above Another.
IPC: E04H6/06
Filed: 1968-02-29
Abstract: 1,159,903. Multi-storey garage. OTTO WÍHR K.G. 29 Feb., 1968 [28 March, 1967], No. 5889/68. Heading B8E. A garage has two platforms 7, 8 pivoted at ground level at 9, 10 and connected by supports 14, 15, the latter having a lost-motion connection 15<SP>1</SP>, 17. Actuation of hydraulic rams 18 enables one end of either platform to be brought to road level 5 to allow a car to be driven on it. Stops 21 are provided on the platforms adjustable for different length vehicles. In a modification, the support 15 is replaced by a ram which can alter the spacing between the platforms to align their ends with the road 5.
Patent GB-127344-A (GB)
Title: Improvements in Flexible, Chain-track Vehicles.
IPC: B62D55/22
Filed: 1917-04-26
Abstract: 127,344. Caterpillar Tractors, Ltd., (Holt Manufacturing Co.). April 26, 1917. Portable-track wheeds. - Supplemental tread shoes 20 of greater width than the main shoes 14 are detachably secured to the track links by bolts 21 fitted in bosses 19 arranged between the rail webs 10 and the flanged edges 15 of the shoes 14. The shoes 14 are formed integral with the webs, or otherwise secured thereto independently of the bosses, the flanges 15 and rail edges 13 being preferably in alinement. As shown in Fig. 4, the ends of the main and supplemental shoes on adjacent links are arranged to intermesh. Specification 100,573 is referred to.
Patent GB-1505011-A (GB)
Title: Safety reflector
IPC: B62J6/20
Filed: 1976-02-16
Abstract: 1505011 Reflective signs C S CARLSON 16 Feb 1976 05981/76 Heading G5C [Also in Divisions E1 and E2] A safety reflector comprises a pair of discs 12, each having a reflex reflective material 14 on the front face thereof and complementary snap acting fasteners 16, 26 on the rear face thereof for locking the discs together in spaced apart, back-to-back relationship. The discs may thus be secured to the spokes of a bicycle by clamping the spokes between the discs (Fig 9), or may be used in combination with a U- shaped band which is secured between the discs (Fig. 11) for clipping to a belt, pocket or trousers. Alternatively the U-shaped band may be provided with one half of the fastening and one of the discs may be fixed to the band (Fig. 10), or the discs may be provided with bores which pass through the fasteners and one of the discs may be bolted to the rear mudguard of a bicycle (Fig. 12).
Patent GB-918983-A (GB)
Title: Production of unsaturated ketones
Inventor: LACEY RICHARD NORMAN
Filed: 1959-02-20
Abstract: Unsaturated ketones of the general formula R1-C(R2)=CHCH2CH2CO.R3 wherein R1 and R2 are hydrogen or alkyl groups and R3 is an alkyl group are prepared by contacting an allyl acetoacetate of the general formula R1R2C(CH=CH2).OCOCH2COR3 with an aluminium tri-phenoxide at an elevated temperature e.g. 100 DEG -300 DEG C.  In an example, 3-methyl-but-1-enyl-3-acetoacetate is heated with aluminium tri-(methyl salicylate) or 140-170 DEG C., CO2 being evolved and 2-methyl hept-2-en-6-one is formed as residue; a lower yield is obtained in absence of the aluminium phenoxide catalyst.
Patent GB-136732-A (GB)
Title: Metal Hoop Case Stripper.
Inventor: SMITH WILLIAM ALFRED VANNAM
IPC: B25B27/08
Filed: 1919-03-11
Abstract: 136,732. Smith, W. A. Vannam-, and Maynard, T. J. March 11, 1919. Prizing-tools.-A tool for removing binding- strips from packing-cases &c. comprises a bar provided with a slot to receive the end of the strip, and adapted to be rolled upon the packing- case &c. to wind up the strip upon the bar. The slot is preferably open at one end to permit removal of the strip from the bar without unwinding, and the tool may be provided with a removable enlargement at the slotted end to act as a fulcrum to facilitate extraction of the nails securing the strip. As shown, a round bar is provided with an open-ended slot 3 and with a cross-handle 2 formed with an ordinary tack-extracting claw 7 and with a chisel 8 for prising open the packing-case &c. A disk 4 integral with, or secured to, a sleeve 5 is mounted on the end of the bar, so that, by lifting the bar, the nails securing the strip are readily withdrawn. The sleeve 5 or the end of the bar 1 may be tapered to retain the sleeve securely, and the sleeve may be provided with lugs engaging the slot 3 to prevent rotation of the disk 4.
Patent GB-1102791-A (GB)
Title: Sealing means for a rotary piston internal combustion engine
IPC: F01C19/08
Filed: 1965-02-11
Abstract: 1,102,791. Rotary-piston internal combustion engines. TOYO KOGYO KABUSHIKI KAISHA. Feb. 11, 1965 [Feb. 26, 1964(2); Feb. 28, 1964], No. 6056/65. Heading F1F. A rotary-piston I. C. engine of the type comprising a three-sided piston planetarily rotatable within a casing having a bi-arcuate inner trochoidal profile and closed at its ends by casing side walls, includes on each piston side face an annular groove 16, Figs. 1 and 3, housing an oil sealing ring 17 urged axially into sealing contact with the adjacent casing side wall by an annular spring 18 mounted in an annular recess 19 behind the groove 16. An annular passage 20 between the outer faces of the ring and groove respectively communicates gaseous pressure which has inevitably leaked past the axial gas seals 5 during the compression and combustion phases of operation of the engine to the recess 19 to augment the spring 18. An auxiliary sealing ring 22 is mounted in an angular groove 21 cut into the inner face of the ring 17. Oil to cool the piston is admitted to through an axial bore in the engine shaft and thence through radial bores into circular piston grooves whence it is thrown outwardly by centrifugal force. In a modification, the passage 20 between the oil sealing ring 17 and the annular groove 16 is formed between the inner faces thereof and the sealing of the ring is enhanced by the centrifugal effects of the cooling oil. The auxiliary sealing ring 22 is in this case mounted in an annular groove cut in the outer face of the sealing ring 17. In a further embodiment two oil sealing rings are fitted, one radially outwards of the other, the outer ring sealing being enhanced by gaseous pressure and the inner ring by the centrifugal effects of the cooling oil. Instead of the auxiliary sealing rings being mounted in grooves cut in the sealing rings 17 they may instead be mounted in grooves cut in the piston.
Patent GB-564628-A (GB)
Title: An improved method of and means for burning bricks and the like
IPC: F27B9/30
Filed: 1943-04-15
Abstract: 564,628. Brick &c. kilns. SHAW, W. C. April 15, 1943, No. 6064. Convention date, Oct. 5, 1942. [Class 51 (ii)] Bricks or the like are burnt by passing them through a number of chambers heated from a furnace so that they are subjected successively to drying, heating, burning, annealing and cooling, the bricks &c. being heated in the heating and annealing chambers by gases from the burning chamber and in the drying and cooling chambers by radiation from adjacent chambers. A kiln; for burning bricks is shown in Figs. 3 and 4, and comprises chambers 28, 27, 25, 26, 29 for drying, heating, burning, annealing and cooling respectively separated by partition walls 27a, 25a, 26a and provided with end walls 30, 31. These walls are supported on transverse partitions 9 and end walls 9a. Between the partitions 9 are arranged longitudinally plates 10 supporting a transverse row of bricks 15 on which are supported intermediate partition walls 15a. Hot gases from fire places 3 on either side of the kiln enter the burning compartment 25 and pass over the tops of the partition walls and through openings therein to the heating and annealing compartments 27, 26 from which they escape from flues 6, 5, 4 to the atmosphere. Heat is radiated from the chamber 27 to the drying-chamber 28 to which air is admitted from the atmosphere through openings in the end walls and the moist air passes to the atmosphere through a damper controlled flue 24. The cooling chamber 29 has similar air admission means and a damper controlled outlet flue 24. Fig. 7 shows a section of one of the partition walls of the kiln through which extend longitudinal channel bricks 16 arranged in vertical and horizontal rows throughout the length, width and height of the kiln and along which channels the bricks 21 to be burnt are moved by any suitable means. Bricks 17, 18, 19 of the partition wall surround the channels 16 leaving spaces 22 through which gases may pass from one compartment to the other.
Patent GB-566982-A (GB)
Title: Improvements in hose suspenders
IPC: A41F11/02
Filed: 1943-04-16
Abstract: 566,982. Suspender clips. COYNE, P., and HAYGARTH, J. April 16, 1943, No. 6145. [Class 44] A clip for use as a hose or like suspender by clipping the hose to an undergarment and of the kind comprising an outer substantially U-form frame with the free ends 1, 2 of the limbs 7, 8 bent inwardly to extend, substantially parallel, across the frame as shown, has restrictions 10 so that the portion of the frame in the region of the bight 9 closely encircles the ends 3, 4, which are preferably flared or bowed apart, as shown, and may be provided with bulbous heads. The clip may be formed of stout wire, or of metal plate or sheet, or may be stamped or moulded from plastic material. In use, a fold of the hose and garment is pulled into the space between limbs 1, 2.
Patent GB-759705-A (GB)
Title: Cyclopentanophenanthrene derivatives and a method for the preparation thereof
IPC: C07J75/00
Filed: 1953-03-05
Abstract: The invention comprises D 1-allopregnene-, di4-pregnene- and D 1,4-pregnadiene-11a :17a -D ol-3:20-dione, their 11-esters, and processes for their preparation.  The D 1-allopregnene-and D 1,4-pregnadiene compounds are prepared from allopregnane-11a :17a -diol-3:20-dione or an 11-ester thereof by selective bromination to yield the corresponding 2-bromo- and 2:4-dibromoderivatives, which are thereafter dehydrobrominated.  The D 4 - pregnene compounds are obtained either (a) from allopregnane - 11a :17a  - diol - 3:20 - dione or an 11-ester thereof, by polybrominating in at least the 2- and 4-positions of Ring A, treating the resultant bromo compound with sodium iodide in the presence of a lower aliphatic ketone to form the corresponding 2-iodo-D 4-pregnene, which is thereafter dehalogenated. In examples: (1) allopregnane-11a ,17a -diol-3,20-dione acetate is brominated in acetic acid containing HBr and the resulting 2-bromo derivative refluxed with 2,6-lutidine or collidine to yield D 1-allopregnene-11a ,17a -diol-3,20-dione acetate, which is saponified with alcoholic KOH to the free diol; (2) the 2-bromo derivative from (1) is dehydrobrominated by reaction with semicarbazide or 2,4-dinitrophenylhydrazine, treating the carbonyl derivative produced with pyruvic acid; (3) allopregnane-11a ,17a -diol-3,20-dione acetate is brominated as in (1), using 2 mols. bromine, to give the 2,4-dibromo derivative, which is refluxed with collidine giving D 1,f - pregnadiene - 11a ,17a  - diol - 3,20 - dione acetate, subsequently saponified to the free diol; (4) the dibromo derivative from (3) is refluxed with NaI in acetone or methyl ethyl ketone, giving 2 - iodo - D 4 - pregnene - 11a ,17a  - diol - 3,20-dione acetate, which is either refluxed with collidine (or lutidine or dimethylaniline), or treated with chromous chloride (or Raney nickel), yielding D 4-pregnene-11a ,17a -diol-3,20-dione acetate, subsequently saponified to the free diol; (5) 16a ,17a -oxido-allopregnan-11a -ol-3,20-dione acetate is brominated as in (3), giving 2,4,6 - tribromo - allopregnane - 11a ,17a -diol-3,20-dione acetate, which is refluxed with NaI in acetone and the resulting 2-iodo-16bromo - D 4 - pregnene - 11a ,17a  - diol - 3,20-dione acetate refluxed with Raney nickel in ethanol to produce D 4-pregnene-11a ,17a -diol-3,20-dione acetate. Specifications 693,991 and 748,887 are referred to.
Patent GB-766564-A (GB)
Title: Manufacture of terephthalic acid
Inventor: ISAACS ELIAS
IPC: C07C237/00
Filed: 1955-02-16
Abstract: A process for the manufacture of terephthalic acid comprises oxidizing at elevated temperatures a para-di (secondary alkyl) benzene with nitric acid in the presence of vanadium which may be present in any form, e.g. ammonium vanadate or vanadium pentoxide. Metallic copper or a copper compound may also be present. Preferably the total number of carbon atoms in the secondary alkyl radicals in the starting material should not exceed 8.  The process may be carried out batchwise or continuously, e.g. by feeding the reactants to a tubular vessel or to a series of cascade vessels.  In examples, a mixture of terephthalic acid and para isopropyl benzoic acid is obtained by heating under reflux para-di-isopropyl benzene with dilute nitric acid with and without ammonium vanadate present (1) and (3); in similar processes ammonium vanadate and vanadium chloride and for comparison copper, ammonium molybdate, cobalt nitrate, sodium dichromate, mercuric chloride and ferrous sulphate are employed (2); terephthalic acid is obtained by heating para-di-isopropyl benzene in an autoclave with dilute nitric acid and ammonium meta vanadate with and without copper (4) and (5); and similar processes are carried out using ammonium vanadate and copper separately and copper-ammonium vanadate and coppervanadium pentoxide mixtures (6).  Terephthalic acid may be separated from unoxidized secondary alkyl benzoic acid by recrystallizing the product at elevated pressures and temperatures from organic solvents or water.  Specifications 655,074, 662,139 and 662,229 are referred to.
Patent GB-198092-A (GB)
Title: Improvements in lithographic offset printing machines
IPC: B41F7/24
Filed: 1922-03-02
Abstract: 198,092. Evans, A. 3. March 2, 1922. Damping - apparatus. - A rotary offset lithographic printing-machine of the kind in which a printing-cylinder a and offset cylinder e coact with an impression-cylinder g is constructed, so as to allow of ready access to the design cylinder, with a damping-apparatus h which is arranged in contact with the offset cylinder e, so that the printing- surface receives its water from the offset surface f. Alternatively all or a part of the damping- apparatus may be arranged as shown at k to act on the printing-surface b after it has received ink from the apparatus d.
Patent GB-211006-A (GB)
Title: Improved pneumatic lint-clearer device for warping machines, looms and other machines
IPC: D02H5/02
Filed: 1923-03-03
Abstract: 211,006. Kenney, F. B., and Sidebottom, J. W. March 3, 1923. Mounting.-A pneumatic device for clearing lint from looms, warping machines, &c., having a series of parallel travelling yarns or threads, comprises a blower swinging transversely and causing its air current to sweep to and fro across the series. As shown in Fig. 2, an electrical fan 11 is supported from a rail 10 above the yarns or threads 1 which pass from a warper creel through a back comb 2, over a measuring roll 3, under a falling rod 4, over a supporting roll 5 to a front comb 6 supporting a roll 7 and warper beam 8; drop wires 9 are hung on the yarns or threads. The fan casing is mounted between the arms of a yoke 12 on journals 13 which allow it to be oscillated in a plane across the yarns &c., by means of a shaft 14 gear driven from the fan shaft and carrying a disc 15 to which a link 16 is pivoted eccentrically at one end, its other end being pivoted to a part fixed on the yoke. The yoke is formed with a hub fitted upon a stud 101 projecting from a collar 102 clamped on the rail 10; the hub is clamped to the stud by a screw, allowing the yoke to be adjusted angularly about the hub. The fan is driven electrically, the switch 22 of the circuit being actuated by a finger on the pedal rockshaft 24 so that the current is switched on only when the warping-machine is running at high speed. Fig. 5 shows a modification in which the blower is oscillated bv a sleeve 106 mounted on the rail 10 and linked to the blower by an arm 108; the sleeve is rocked through a rod 111 and a lever 112 pivoted to the machine frame and having a pin 114 working in a cam groove of a wheel driven through gearing from the shaft of a drum 26.
Patent GB-252479-A (GB)
Title: Improvements in machinery for treating, compressing and moulding plastic substances
IPC: B30B11/20
Filed: 1925-03-07
Abstract: 252,479. Dryden, W. March 7, 1925. Rolling-machines.-Meal for cattle food is fed through a hopper h<2>, Fig. 1, into the crescentshaped space between an eccentrically arranged inner roller F and an outer rotating ring A and is compressed by the roller F into a series of grooves a<2> in the internal face of the ring, indenting teeth f<1> being provided on the roller F and entering the grooves a<2>. The crescent-shaped space is closed in an axial direction by a cover plate H and by extensions b<4> of a bearing ring B in which the ring A is mounted. The ring B is rotated by a gear wheel D fixed to a shaft E driven by bevel gearing and carrying the roller F, the wheel D having teeth d<1> meshing with internal teeth b<4> on the ring. The pitch circles of the teeth b<4>, d<1> correspond with the internal and external diameters of the ring A and roller F respectively. The bearing ring B has a roller 'bearing b' in a frame C, and its weight is supported by a pair of bearing plates b<3>, c<1>. The compressed material. is disengaged from the grooves a2 by a series of knives K, Fig. 3, which enter the grooves and lead the material to guides k<1> discharging into a hopper k-. The grooves are tapered to allow the material to be readily detached. The moulding grooves may be on the surface of the roller and the indenting teeth formed on the interior surface of the outer ring. Specification 237,944 is referred to.
Patent GB-1012194-A (GB)
Title: Insulated bus bar and bus bar assembly
IPC: H02G5/06
Filed: 1964-02-14
Abstract: 1,012,194. Bus-bar assembly. SQUARE D CO. Feb. 14, 1964 [April 2, 1963], No. 6276/64. Heading H2C. [Also in Division H1] In a bus-duct 22 the bus-bars 15, 17 are each insulated by strips 14 (e.g. of polyester) folded lengthwise symmetrically over the edges of the bar and a strip 12 of adhesive insulating film (e.g. varnished glass cloth) folded around the bar and the strips 14. The insulated bars are sandwiched between insulating sheets 20 (e.g. of polyester) and bound together by a helical wrapping of flexible insulating material (e.g. epoxy impregnated glass cloth).
Patent GB-330257-A (GB)
Title: Improvements in the manufacture of manganese dioxide
IPC: C01G45/02
Filed: 1929-02-26
Abstract: 330,257. Kato, Y., and Yamamoto, K. Feb. 26, 1929. Manganese dioxide is produced by heating any natural or artificial lower oxide, or any compound of manganese converted into the lower oxide by heating, from 200‹-500‹ C. in the presence of, say, 3-5 per cent alkali, that is, the oxide, hydroxide, or carbonate of an alkali or alkaline earth, whilst passing oxygen, or a free oxygencontaining gas, such as air, over the mixture. The velocity of the reaction is accelerated by the addition of steam to the oxygen. When the oxidation is complete, the product is washed with water; or with dilute acid, when alkaline earths are employed. In a modification of the process, the alkali is first added to a portion of the lower oxide, and heated in the presence of oxygen to form the manganate. The remainder of the lower oxide is now added to obtain the dioxide. Reference has been directed by the Comptroller to Specifications 132,114 and 135,305.
Patent GB-1520325-A (GB)
Title: Snap fastening device
IPC: B63H9/08
Filed: 1976-02-18
Abstract: 1520325 Hook fastening G A CARLSSON 18 Feb 1976 [18 Feb 1975] 06396/76 Heading E2A A hook fastening comprises a U-shaped body having a closure member 9 pivoted therein, the closure member includes a spring locking pin 12 which is self locking into hole 11 in body 1 on pivotal closure of the member 9. Unlocking can be effected by means of handle 21. The body 1 may be attached to e.g. a rope by means of holes 3 and 4.
Patent GB-510624-A (GB)
Title: Lid support
IPC: E05C17/32
Filed: 1938-03-01
Abstract: 510,624. Stays for hinged lids. ATWOOD, S. B., and ATWOOD, J. T. March 1, 1938, No. 6484. [Class 65 (i)] A stay for a lid 11 comprises two jointed arms 13, 14 pivoted respectively to the receptacle 10 and lid, the arm 14 having pivoted thereon a multi-toothed pawl 21 co-acting with a fixed ratchet 20 on the lid, so that the lid may be supported in different positions. Means are provided for resisting the turning movement of the pawl when engaged with the ratchet.
Patent GB-756980-A (GB)
Title: Improvements in or relating to protective systems for direct current motors
IPC: H02H7/093
Filed: 1954-03-05
Abstract: 756,980. Control of D.C. motors. IGRANIC ELECTRIC CO., Ltd. March 5, 1954 [March 6, 1953], No. 6495/54. Class 38(3) A protective relay 18 for interrupting the power connections to a shunt motor 10 in the event of excessive reduction of field excitation has one coil 18a connected in series with the shunt field winding 14 and control rheostat 22. A second coil 18b of the relay exerts a force which aids that of the coil 18a and is connected, after the motor has started across the rheostat 22. and control rheostat 22. A second coil 18b is thus substantially constant regardless of the speed adjustment of the rheostat 22. If, however, the field current decreases while the speed adjustment remains unchanged, the combined effect of the relay coils diminishes and the power connecions of the motor are interrupted.